使用layer的iframe层提交表单后，需要关闭当前的iframe层，然后刷新父页面的方法2

<input type="button" onclick="edit(${it.id?c})"
       class="layui-btn  layui-btn-normal layui-btn-sm" value="编辑">

  function edit(id) {
//iframe层
            layer.open({
                type: 2,
                title: '编辑服务商',
                shadeClose: true,
                shade: 0.8,
                area: ['650px', '550px'],
                content: '/serprovider/getSerproviderById?id=' + id //iframe的url
            });
        }

@RequestMapping(value = "/getSerproviderById", method = RequestMethod.GET)
public ModelAndView getSerproviderById(@RequestParam(value = "id", required = true) Integer id) {
    ModelAndView modelAndView = new ModelAndView();
    ServiceProvider serviceProvider = serviceProviderService.getSerproviderById(id);
    modelAndView.addObject("info", serviceProvider);
    modelAndView.setViewName("serprovider/getSerproviderById");
    return modelAndView;

}

<!-- 内容主体区域 -->
<form class="layui-form" action="#" method="post">
    <div class="layui-form-item">
        <label class="layui-form-label">供应商名称<span style="color: red;">*</span></label>
        <div class="layui-input-block">
            <input type="text" name="providerName" required lay-verify="required" placeholder="请输入供应商名称"
                   value="${info.providerName!}"
                   autocomplete="off" class="layui-input">
        </div>
    </div>
    <div class="layui-form-item">
        <label class="layui-form-label">公司名称<span style="color: red;">*</span></label>
        <div class="layui-input-block">
            <input type="text" name="providerCompany" required lay-verify="required"
                   value="${info.providerCompany!}"
                   placeholder="请输入公司名称"
                   autocomplete="off" class="layui-input">
        </div>
    </div>
    <div class="layui-form-item">
        <label class="layui-form-label">联系人<span style="color: red;">*</span></label>
        <div class="layui-input-block">
            <input type="text" name="linkMan" required lay-verify="required" placeholder="请输入联系人"
                   value="${info.linkMan!}"
                   autocomplete="off" class="layui-input">
        </div>
    </div>
    <div class="layui-form-item">
        <label class="layui-form-label">联系电话<span style="color: red;">*</span></label>
        <div class="layui-input-block">
            <input type="text" name="cellphone" required lay-verify="required|number" placeholder="请输入联系电话"
                   value="${info.cellphone!}"
                   autocomplete="off" class="layui-input">
        </div>
    </div>

    <div class="layui-form-item">
        <div class="layui-input-block">
            <input type="hidden" name="id" value="${info.id?c}">
            <button lay-submit lay-filter="go"
                    class="layui-btn  layui-btn-normal ">提交
            </button>
            <button type="reset" class="layui-btn layui-btn-primary">重置</button>
        </div>
    </div>
</form>
<script>
    layui.use('element', function () {
        var element = layui.element;
    });
    layui.use('form', function () {
        var form = layui.form;
        // 这个是在iframe里面的js代码
        var frameindex = parent.layer.getFrameIndex(window.name); //先得到当前iframe层的索引
        form.on('submit(go)', function (data) {
            console.log(data.field); //当前容器的全部表单字段，名值对形式：{name: value}
            var index = layer.load(1, {
                shade: [0.1, '#fff'] //0.1透明度的白色背景
            });
            var url = '/serprovider/saveEditServiceProvider';
            $.post(url, data.field, function (ev) {
                if (ev.code == 200) {
                    layer.msg(ev.msg);
                    parent.location.href = "/serprovider/getServiceProviderList";
                } else {
                    layer.close(index);
                    layer.msg(ev.msg);
                }
            }, 'json')
            //发送ajax
            return false; //阻止表单跳转。如果需要表单跳转，去掉这段即可。
        });
    });
</script>

@RequestMapping(value = "/saveEditServiceProvider", method = RequestMethod.POST)
@ResponseBody
public Map saveEditServiceProvider(ServiceProvider serviceProvider) {
    boolean flag = serviceProviderService.saveEditServiceProvider(serviceProvider);
    Map map = new HashMap();
    if (flag) {
        map.put("code", 200);
        map.put("msg", "更改成功");
    } else {
        map.put("code", "500");
        map.put("msg", "更改失败，代码错误");
    }
    return map;
}